Multi-size gradient filler modified solvent-free heavy anti-corrosion coating and preparation method thereof

A gradient-type, multi-size technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of insufficient corrosion resistance and achieve the effect of maintaining the coating intact, excellent oil resistance, and good heavy-duty anti-corrosion ability

Active Publication Date: 2021-03-23
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: to propose a formula of multi-size gradient filler modified solvent-free heavy-duty anti-corrosion coating, its preparation method and application method, so as to overcome the problem of insufficient corrosion resistance of existing coatings

Method used

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  • Multi-size gradient filler modified solvent-free heavy anti-corrosion coating and preparation method thereof
  • Multi-size gradient filler modified solvent-free heavy anti-corrosion coating and preparation method thereof
  • Multi-size gradient filler modified solvent-free heavy anti-corrosion coating and preparation method thereof

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preparation example Construction

[0029] A method for preparing a multi-size gradient filler-modified solvent-free heavy-duty anti-corrosion coating comprises the following steps:

[0030] (1) Preparation of modified graphene: mixing ethanol and water according to a volume ratio of 3:1, mixing the mixed solution with graphene oxide, stirring the mixture and ultrasonically dispersing to obtain a homogeneous graphene oxide suspension, Add γ-aminopropyltriethoxysilane-modified graphene oxide to it according to the stoichiometric ratio, stir and condense and reflux at a constant temperature in an oil bath at 70°C for 6h-8h to make it react fully, and then vacuum pump filtered, washed with ethanol / water mixed solution, and subjected to critical freeze-drying to obtain amino-modified graphene;

[0031] (2) Ingredients: take film-forming material, filler and auxiliary agent respectively in proportion;

[0032] (3) Grinding: Add fillers and additives to the film-forming material, stir with a mixer at high speed for a...

Embodiment 1

[0050] (1) Preparation of modified graphene: mixing ethanol and water according to a volume ratio of 3:1, mixing the mixed solution with graphene oxide, stirring the mixture and ultrasonically dispersing to obtain a homogeneous graphene oxide suspension, According to the stoichiometric ratio, graphene oxide modified by γ-aminopropyltriethoxysilane was added thereto, stirred at a constant temperature in an oil bath at 70°C, condensed and refluxed for 6 hours to make the reaction fully, and then vacuum suctioned, Washing with ethanol / water mixed solution and performing critical freeze-drying to obtain amino-modified graphene;

[0051] (2) Ingredients: Weigh the film-forming materials, fillers and additives in proportion as follows:

[0052]

[0053] (3) Grinding: Add fillers and additives to the film-forming material, stir with a mixer at high speed for 10 minutes, and then put it into a sand mill to grind until the output viscosity is 15000-19000mPa·s to obtain a multi-size ...

Embodiment 2

[0060] (1) Preparation of modified graphene: mixing ethanol and water according to a volume ratio of 3:1, mixing the mixed solution with graphene oxide, stirring the mixture and ultrasonically dispersing to obtain a homogeneous graphene oxide suspension, According to the stoichiometric ratio, graphene oxide modified by γ-aminopropyltriethoxysilane was added thereto, stirred at a constant temperature in an oil bath at 70°C, condensed and refluxed for 8 hours to make the reaction fully, and then vacuum suctioned, Washing with ethanol / water mixed solution and performing critical freeze-drying to obtain amino-modified graphene;

[0061] (2) Batching: Take film-forming material, filler and auxiliary agent respectively in proportion as follows:

[0062]

[0063] (3) Grinding: Add fillers and additives to the film-forming material, stir with a mixer at high speed for 10 minutes, and then put it into a sand mill to grind until the output viscosity is 15000-19000mPa·s to obtain a mu...

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Abstract

The invention discloses a multi-size gradient filler modified solvent-free graphene heavy anti-corrosion coating and a preparation method thereof, and belongs to the technical field of surface treatment. The coating is prepared by mixing a film-forming material, a curing agent, a gradient filler and an auxiliary agent. The coating has favorable corrosion resistance and oil resistance, and overcomes the problem of insufficient corrosion resistance of an existing anticorrosive coating in the marine environment.

Description

technical field [0001] The invention relates to a multi-size gradient filler-modified solvent-free graphene heavy-duty anti-corrosion coating and a preparation method thereof, which belong to surface treatment technology, and relate to a multi-size gradient-type filler-modified solvent-free heavy-duty anti-corrosion coating. Background technique [0002] The protective properties of marine coatings are quite different from those of ordinary industrial coatings. In addition to conventional anti-corrosion, cathodic stripping protection under electrified conditions should also be considered for naval base materials. Solvents lead to conductive materials, thus excluding metallic fillers and soluble active anti-corrosion fillers. Commonly used anti-corrosion coatings cannot meet the specific anti-corrosion requirements of naval coatings without active anti-corrosion fillers. Therefore, the present invention designs a multi-size gradient filler-modified solvent-free heavy-duty an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D7/62C09D7/61C09D5/08
CPCC08K2201/003C09D5/08C09D163/00C09D7/61C09D7/62C08K13/06C08K9/06C08K3/042C08K3/40C08K3/34
Inventor 田泳关振威李静张玉忠黄大庆
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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